public class Accumulate {
    static int count = 0;

    public static void main(String[] args) throws InterruptedException{
        Object object = new Object();
        Thread t1 = new Thread(()->{
            synchronized(object) {
                for (int i = 0; i < 10000; i++) {
                    count++;
                }
            }

        });
        Thread t2 = new Thread(()->{
            synchronized(object) {
                for (int i = 0; i < 10000; i++) {
                    count++;
                }
            }
        });
        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println("count的值为："+count);
    }
}
